Microscopy - Brightfield/Phase Contrast

An investigator is able to use the Axioskop Microscope
to view stained slides using brightfield, or view unstained
slides using
the phase contrast filter. With phase contrast denser areas
will show
up as a brighter spot.

This is a brightfield image of macrophages
stained with
maygrunwald/geimsa stain.

This is a phase contrast image of inclusion
bodies inside
of bacteria. The white areas inside the bacteria are the
inclusion bodies,
being more dense.